UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 637

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(Unit: kbps)
Rate Value
Caution The values in Table 15-23 do not guarantee the operation of the network system. Thoroughly
Set Baud
83.3
83.3
83.3
83.3
83.3
83.3
83.3
83.3
83.3
83.3
33.3
33.3
33.3
33.3
33.3
33.3
33.3
33.3
33.3
33.3
33.3
33.3
33.3
33.3
100
100
100
100
100
100
100
100
check the effect on the network system, taking into consideration oscillation errors and delays of
the CAN bus and CAN transceiver.
Division
Ratio of
C0BRP
Table 15-23. Representative Examples of Baud Rate Settings (f
10
10
12
12
10
10
12
12
15
15
16
16
20
20
24
24
30
30
4
4
5
5
8
8
4
4
6
6
6
6
8
8
00000011
00000011
00000100
00000100
00000111
00000111
00001001
00001001
00000011
00000011
00000101
00000101
00000101
00000101
00000111
00000111
00001011
00001011
00001001
00001001
00001011
00001011
00001110
00001110
00001111
00001111
00010011
00010011
00010111
00010111
00011101
00011101
Set Value
Register
C0BRP
Length
of DBT
20
20
16
16
10
10
24
24
16
16
16
16
12
12
24
24
20
20
16
16
15
15
12
12
10
10
8
8
8
8
8
8
Preliminary User’s Manual U19748EJ1V0UD
CHAPTER 15 CAN CONTROLLER
Valid Bit Rate Setting (Unit: kbps)
SEGMENT
SYNC
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
SEGMENT
PROP
11
7
9
7
9
3
5
3
5
7
9
5
7
9
5
7
3
5
7
9
7
9
7
9
6
8
5
7
3
5
3
5
SEGMENT
PHASE
1
6
5
4
3
3
2
2
1
8
7
5
4
3
2
3
2
2
1
8
7
6
5
4
3
4
3
3
2
3
2
2
1
SEGMENT
PHASE
2
6
5
4
3
3
2
2
1
8
7
5
4
3
2
3
2
2
1
8
7
6
5
4
3
4
3
3
2
3
2
2
1
CANMOD
TSEG1
C0BTR Register
1100
1101
1010
1011
0101
0110
0100
0101
1110
1111
1001
1010
1011
1100
0111
1000
0100
0101
1110
1111
1100
1101
1010
1011
1001
1010
0111
1000
0101
0110
0100
0101
[3:0]
Setting Value
= 8 MHz) (2/2)
TSEG2
[2:0]
101
100
011
010
010
001
001
000
111
110
100
011
010
001
010
001
001
000
111
110
101
100
011
010
011
010
010
001
010
001
001
000
Sampling
(Unit: %)
point
70.0
75.0
75.0
81.3
70.0
80.0
75.0
87.5
66.7
70.8
68.8
75.0
81.3
87.5
75.0
83.3
75.0
87.5
66.7
70.8
70.0
75.0
75.0
81.3
73.3
80.0
75.0
83.3
70.0
80.0
75.0
87.5
635